In the outseam, 1.5 " (3.9 cm) below the waist edge, and again 6.25 " (16.25 cm) below that (for the front pockets).

In the fly fall about 1.5 " (3.9 cm) to 2.5 " (6.5 cm) from the inseam: Put the zero end of the tape measure 3/8 " (.97 cm) below the waist edge and measure along the fly fall 1/4 " (0.6 cm) in from the pattern outline.

Cut the fly notch at the nearest whole inch, and that will be the length of your pants zipper.